Hearing aid



FIG. 1 is a side view of a first hearing aid of my design;

FIG. 2 is another side view of the first hearing aid of my design;

FIG. 3 is a perspective view of the first hearing aid of my design;

FIG. 4 is another perspective view of the first hearing aid of my design;

FIG. 5 is another perspective view of the first hearing aid of my design;

FIG. 6 is another perspective view of the first hearing aid of my design;

FIG. 7 is another perspective view of the first hearing aid of my design;

FIG. 8 is a side view of a second hearing aid of my design; FIG. 9 is another side view of the second hearing aid of my design;

FIG. 10 is a perspective view of the second hearing aid of my design;

FIG. 11 is another perspective view of the second hearing aid of my design;

FIG. 12 is another perspective view of the second hearing aid of my design; and,

FIG. 13 is another perspective view of the second hearing aid of my design. 

CLAIM The ornamental designs for hearing aid, as shown and described. 